SEATTLE/PARIS/WASHINGTON - Boeing anti-stall software on a doomed Ethiopian Airlines jet re-engaged and pushed the jet downwards after the pilots initially turned it off due to suspect data from an airflow sensor, two people familiar with the matter said.
Boeing warned against speculation ahead of a preliminary report, while Ethiopian investigators could not be reached for comment. The investigation has now turned towards how MCAS was initially disabled by pilots, in line with part of a cockpit checklist procedure, but then appeared to start working again before the jet plunged to the ground, the people said.A directive issued after the Indonesian crash instructed pilots to use two cut-out switches to disengage the system in the event of problems and then leave them switched off.
Investigators will also look at whether the crew carried out procedures in full, including a recommendation to steady the plane’s nose using the trim system before turning software off. However, initial flight data indicates the aircraft was flying nose-heavy and not in a “neutral” attitude when pilots hit the stabilizer cutout switches to disable the MCAS system, the person added, making the situation harder to manage.
MCAS = Must Cut After Start? 😉
Remote controlled.
'Boeing warned against speculation ahead of a preliminary report' I suspect your account counts as speculation.
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Source: Reuters - 🏆 2. / 97 Read more »